Democratic People's Republic of Korea (DPRK) leader Kim Jong-un arrived in Singapore on Sunday, two days ahead of the planned meeting with US President Donald Trump, Singapore's Foreign Minister said on Twitter.

A vehicle believed to be carrying North Korea's leader Kim Jong-un travels past in Singapore June 10, 2018. (Photo: Reuters)

The world's attention has shifted to Singapore, after Trump announced his meeting with Kim was back on track. 

The city-state is making preparations for the historic summit, with hotel rooms reportedly being booked and police preparing to lock down the city. Some military helicopters and vessels could be seen around Sentosa Island, where the summit will take place, according to local media. 

Pyongyang's nuclear arsenal – which has seen it subjected to several sets of UN Security Council sanctions and threatened with military action by the Trump administration – will top the agenda.

Bringing the Korean War to a formal end 65 years after hostilities ceased will also be on the table at the first-ever summit between a North Korean leader and a sitting president of its "imperialist enemy".